117717705 has 48 divisors (see below), whose sum is σ = 241847424. Its totient is φ = 53809920.

The previous prime is 117717689. The next prime is 117717709. The reversal of 117717705 is 507717711.

It is not a de Polignac number, because 117717705 - 2⁴ = 117717689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117717705.

It is not an unprimeable number, because it can be changed into a prime (117717709) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1585 + ... + 15425.

It is an arithmetic number, because the mean of its divisors is an integer number (5038488).

Almost surely, 2^117717705 is an apocalyptic number.

117717705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117717705 is an abundant number, since it is smaller than the sum of its proper divisors (124129719).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117717705 is an equidigital number, since it uses as much as digits as its factorization.

117717705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13868 (or 13856 counting only the distinct ones).

The product of its (nonzero) digits is 12005, while the sum is 36.

The square root of 117717705 is about 10849.7790300079. The cubic root of 117717705 is about 490.0953653063.

The spelling of 117717705 in words is "one hundred seventeen million, seven hundred seventeen thousand, seven hundred five".